| APA | HQ. (2012, February 9). In Acronym Geek. Retrieved 17:57, February 9, 2012, from http://www.acronymgeek.com/HQ |
| MLA | "HQ." Acronym Geek. (2012). Acronym Geek. 9 Feb 2012 <http://www.acronymgeek.com/HQ>. |
| MHRA | 'HQ', Acronym Geek, 9 February 2012, <http://www.acronymgeek.com/HQ> [accessed 9 February 2012] |
| Chicago | "HQ", http://www.acronymgeek.com/HQ (accessed February 9, 2012). |
| CBE/CSE | HQ [Internet]. Acronym Geek; 2012 Feb 9 [cited 2012 Feb 9]. Available from: http://www.acronymgeek.com/HQ. |
| Bluebook | HQ, http://www.acronymgeek.com/HQ (last visited February 9, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, HQ, http://www.acronymgeek.com/HQ (optional description here) (as of Feb. 9, 2012, 17:57). |
| AMA | HQ. Acronym Geek. February 9, 2012, 17:57. Available at: http://www.acronymgeek.com/HQ. Accessed February 9, 2012, 17:57. |